#pgl{
    width: 150px;
    height: 55px;
}
#pgl1{
    margin-top: -300px;
}
#tuwen1{
    width: 410px;
    height: 410px;
    margin-top: -500px;
}
#tuwen2{
    width: 410px;
    height: 410px;
    margin-top: -550px;
    margin-left: 300px;
}
#finish{
    width :1500px;
    height: 300px;
    background-color: black;
}